what is the difference between homozygous and heterozygous
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Homozygous means you carry two genes that are the same for each trait. Example: BB for blue eyes.
Heterozygous means you carry two different genes for each trait. Example: Bb would also be blue eyes, though the small "b" would be the gene for brown eyes.
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Heterozygous means you carry two different genes for each trait. Example: Bb would also be blue eyes, though the small "b" would be the gene for brown eyes.
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Michelle15:
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ANSWER :-
Homozygous and Heterozygous are the two of the few types of genotypic combinations that are studied under the topics related to genetics.
The differences between these terms are listed below-
Homozygous :-
- Homozygous combinations of genes constitute genotypes that are made up of wild, original, non mutated, dominant alleles only.
- Homozygous combinations are found in the progeny that are produced as a result of pure breeding or true breeding or genetic selfing of pure-line parents.
- The progeny produced through pure breeding are referred to as "Pure-line individuals".
- Examples of homozygous combinations are as follows-
- In the context of height, TT (Homozygous tall) and tt (Homozygous dwarf).
- In the context of colour of flowers, RR (Homozygous red) WW (Homozygous white).
Heterozygous :-
- Heterozygous combinations of genes constitute of genotypes that are made up of a mixture of both, wild, original, non mutated, dominant genes, and mutated, recessive alleles.
- Heterozygous combinations are found in the progeny that are produced as a result of impure breeding or genetic crossing of pure-line parents.
- Only the wild, original, non mutated, dominant allele is able to express itself in phenotypes of such genotypic combinations.
- Examples of heterozygous combinations are as follows-
- In the context of height, Tt (Heterozygous tall), heterozygous combinations can never produce dwarf plants.
- In the context of eye colour Bb (Brown eyes), heterozygous combinations can never produce blue eyes.
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